You can:0) Implement a public method to initialize the variable (passing the path as a parameter to the method).1) Make a public property that can be set externally of the class that contains it2) If the variable only has to be set one time, you could pass the path as a parameter to...

MVVM

Parameter

What are the two main facilities present in WPF that make it a natural fit for the MVVM pattern?

23 Aug 2011 by #realJSOP

Go here [^]

MVVM

Silverlight File Manager

1 Sep 2011 by #realJSOP

It's a simple matter of starting a new Silverlight navigation project. It adds everything to your app that you need to get started.

Silverlight

MVVM

How do I set "ischecked" for nested toggle buttons (WPF, C#)

25 Oct 2016 by #realJSOP

The binding for the inner button's IsSelected property merely needs to refer to the value of it's parent control's IsSelected property, something like this:"IsSelected={Binding IsSelected, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ToggleButton}}}"

XAML

Binding

MVVM

Mvvm model to viewmodel communication

5 Mar 2018 by #realJSOP

The model does nothing more than get/save/or delete data from the data source. The view should never directly call any method or refer to any property in the model. There are many ways to manage this interaction, but presenting a reasonably complete example in Q/A is beyond the intent of Q/A. ...

WPF

MVVM

How to link combobox values to listbox values in MVVM?

13 Mar 2018 by #realJSOP

I'm assuming you have one collection for the combobox, and one for the listbox. In your listbox collection item, add a property called IsVisible. When your combobox selection changes, set your new IsVisible property to true or false, depending on whether or not the item is associated with...

MySQL

WPF

MVVM

Why my cheked bool value from checkbox is false ?

21 Mar 2018 by #realJSOP

Start by putting a breakpoint on the set method in your Checked property, and verify that the binding you've set up is actually working.

WPF

MVVM

How should my method look like for automatic authentication?

23 Mar 2018 by #realJSOP

So you want to log them in immediately upon swiping their card? That is pretty insecure because ANYBODY could swipe the card (even someone else's card). Two-factor authentication (something you have - the card, and something you know - your password) is highly recommended. If that's not what...

SQL

WPF

MVVM

How to implement colspan and rowspan in WPF app?

23 Mar 2018 by #realJSOP

In your XAML, add this attribute to the appropriate element(s): Grid.ColumnSpan=n (where "n" is the number of columns to span in your grid)

.NET

WPF

MVVM

Mvvm validation - model o viewmodel?

5 Nov 2018 by #realJSOP

Validation should be performed in the view or viewmodel. Check this article: Validation in WPF[^]

WPF

MVVM

validation

How to perform cell by cell commit to database in MVVM WPF?

24 Jan 2019 by #realJSOP

So before you refresh the grid, get/retain the current cursor position, and restore that position after the refresh.

entity-framework

WPF

MVVM

C# WPF MVVM page navigation on each page, without framework

15 Oct 2019 by #realJSOP

Put your array of pages into a global static class. This makes your pages array available to any object. Another option is to put all of the pages into the main form's xaml, and set their Visibility property to Visibility.Collapsed. At that point, all you have to do is manage the Visibility...

WPF

MVVM

Wpf MVVM, how to disable command based on error on conversion failing with iNotifydataerrorinfo through the viewmodel?

13 Nov 2019 by #realJSOP

You don't disable commands - you disable the controls that invoke them. The view should be able to detect the error status and disable a control based on that status. That's how it's supposed to work.

WPF

MVVM

validation

Create a generic closewindow button in MVVM

25 Nov 2019 by #realJSOP

You could create a base window class with the appropriate event handler in it, and derive all your actual windows from that base class. At that point, you can add a Click event handler in the XAML and simply point it at the base class handler method. If you want to make it possible to override...

WPF

MVVM

How to get selectitem in a combo box MVVM silverlight 5

16 Dec 2019 by #realJSOP

You can bind the SelectedItem property in the combo box to a public property in your form. That means your form has to inherit/implement INotifyPropertyChanged. Another way is to handle the SelectionChanged event for the combo box, and set a method variable like so: MyType selected =...

Silverlight5

MVVM

How can I print grid WPF .netcore with calibrun micro

11 May 2020 by #realJSOP

.Net Core is NOT ready for prime time. You shouldn't be using it in enterprise development until they release .Net 5.0, and even then, you should probably wait at least six months while they fix their half-assed code. If it's possible to mix...

WPF

Caliburn.Micro

MVVM

Entity Factory - Get Your ORM-less Freak On!

4 Nov 2021 by #realJSOP

A tool to generate model and viewmodel classes directly from your selected database

How to make a WPF window behave as dialogwindow when launched through process class

7 May 2021 by #realJSOP

The only way I can think of to do what you want is to disable the entire main window. When the sub-process is launched, set IsEnabled to false in the main window class. BTW, this is a stupid design decision. Why not just open a form within the...

WPF

MVVM

More than one message at notification centre windows 10

25 Jul 2021 by #realJSOP

Maintain a list of notifications, and any time that list contains 1 or more items, display the balloon. If there are more than one notification, provide a way for the user to move from one to the next (and back again).

WinForms

WPF

MVVM

Why a variable in binding doesn't refresh in a timer?

12 Feb 2022 by #realJSOP

This might help: Update a WPF UI from Another Thread – Stephen Haunts { Freelance Trainer and Writer }[^]

MVVM

How to handle usercontrol unloaded event with MVVM (WPF)

23 Jan 2018 by .NetDev_1012

Hello, Is there a way to handle a UserControl Unloaded Event with MVVM in WPF? I've seen an example for a Window in this article: Handling a Window's Closed and Closing events in the View-Model[^] However, I tried modifying it for a UserControl, but to no avail. Thanks many! What I have...

MVVM

3 tier architecture with mvvm

21 Oct 2015 by 1234ctk

I need to do a project with 3-tieras I understand the 3 tier architecture work like that:I have the view-the UI of the user,I have the BLL that have the business logic and the DAL+Model-(I want to use in entity framework)-these three are different projects on the same solution and for...

.NET

N-Tier

MVVM

How to send F5 command to my browser after every 5 seconds in WPF-MVVM Application ?

6 Jul 2015 by 1sumitanand

On a Button click i'm opening a default browser with a desired Url.I want that in a loop inputted by the user it will have "F5" command executed that number of times.I am able to open the number of tabs should open in default browser but not the number of times it should refresh itself.

WPF

MVVM

Using the MVVM pattern: what should raise the propertychanged event, if the a property of an instance of a (Data)Model class is changed?

3 Jan 2012 by 2irfanshaikh

i think this link [^] will help you

WPF

event

MVVM

Simplest MVVM Tutorial -A Quick Refresher to WPF MVVM

13 Apr 2016 by @nkit Bajpai

This article discuss a simple application built using WPF MVVM design pattern and explain the basics of Command Binding and DataBinding.

Label Text from Property Name/Description Attribute

11 Jul 2013 by _Asif_

Yes, it is possible. You can do it using Reflection. Check thishttp://msdn.microsoft.com/en-us/library/aa288454(v=vs.71).aspx[^]

WPF

MVVM

MVVM # Episode 1

3 Dec 2013 by _Maxxx_

Using an extended MVVM pattern for real world LOB applications: Part 1

MVVM # Episode 2

3 Dec 2013 by _Maxxx_

Using an extended MVVM pattern for real world LOB applications: Part 2

MVVM # Episode 3

13 Dec 2013 by _Maxxx_

Using an extended MVVM pattern for real world LOB applications: Part 3

MVVM # Episode 4

3 Dec 2013 by _Maxxx_

Using an extended MVVM pattern for real world LOB applications: Part 4

.net MVVM application and design-time data

8 May 2013 by _Maxxx_

Interesting question.I'm not a big IOC user so what I offer may not be applicable.in my mvvm 'framework' my design time data (essentially view models) inherit from the run time view models.I initially put them in the view project with the views - but I just had a quick try and moved...

UserControl Visibility in WPF MVVM Model

29 Oct 2013 by _Maxxx_

I guess your second user control is displaying data from the selected item in the list box?If so, then binding the listbox's SelectedItem property to your ViewModel will tell you if something is selected and, if so, what it is.You could then bind the visibility of your second user...

WPF

MVVM

user-controls

How should I approach on applying WPF MVVM to a large scale application

29 Oct 2013 by _Maxxx_

I'm not sure why you are using a UI_Model here? What would be there?I normally consume POCO data classes in my view model - and either wrap them or otherwise present the information to the ViewsI also separate my View and ViewModel into different projects in the solution, with the View...

WPF

MVVM

From where does Model get data in MVVM?

1 Dec 2013 by _Maxxx_

Put simply, MVVM does not determine from where your model classes get their data - MVVM is just a pattern used for development.Your model classes could be plain old objects that you populate programatically (say via a datareader from a database, or from loading a CSV file from disk - MVVM...

Silverlight4

MVVM

how to add a article to a list with MVVM. WPF C#

9 Dec 2013 by _Maxxx_

The listview should be bound to a collection in the viewModel, the button should execute a command in the ViewModel.The command execution should add an article to the collection.Because the list view is bound to the collection, the new entry should be shown.

WPF

MVVM

Modal Popup on UserControl in MVVM pattern

6 Jan 2014 by _Maxxx_

From your description I would think about having a base View class that has the ability of showing itself in a window or in an existing control.So, when you load/unload a view you can tell the View to either load itself into some container (as it presumably does now) or to pop itself up into...

WPF

MVVM

WPF MVVM Object binding.

15 Jan 2014 by _Maxxx_

You can't do what you are trying easily - setting the focus to a particular control is a pain in MVVM generally.It also goes against what MVVM is all about - the VM shouldn't really know focus is going to be set at all.If you do need to do it, you can use attached properties - see...

WPF

MVVM

How Do I know if I am implementing MVVM correctly

22 Jan 2014 by _Maxxx_

I'm not sure I entirely understand what you are asking, but it seems to me that you are allowing the user to change layout of controls, and want to save the layout to a database, where currently you save the layout to XML.It sounds to me like you would have a public method on a BaseViewModel...

WPF

MVVM

ListBox and Panels in WPF

26 Sep 2013 by _Noctis_

This tip shows the different results of using a ListBox in different panels, and the effects on scrolling.

The Big MVVM Template

20 Apr 2016 by _Noctis_

To save you from doing this every time you want a WPF/MVVM project, here it is, all rolled into one.

MVP implementation details in WinForms

10 Dec 2012 by _yaRus_

Hello, CodeProject.I am working on implementation of MVP patter for WinForms application.I have the following View interface declaration:public interface IView{ event EventHandler ViewShown; event EventHandler ViewClosed; void...

Paid and remain amount always saved null in database

10 Jul 2023 by A Belal

paid and remain Amount always saved null in database although i get value is not null by javascript What I have tried: my storedProcedure USE [OnlineMarket] GO /****** Object: StoredProcedure [dbo].[InsertintoSalesInvoice] Script Date:...

Model list is not returning to the Controller from view

30 Dec 2013 by Aaditya parcha

Hi,i have a student class like belowpublic class Student { public int stdId { set; get; } public string stdName { get; set; } public string dept { get; set; } }and my controller code is public ActionResult Student() { ...

Wpf application with MVVM

31 Jan 2018 by abboudi_ammar

Good evening everyone, I am looking to develop a simple application to understand MVVM architecture with WPF. I just want to insert a text entered in a text field entered on a listview when pressing the add button. I create two folders that are Template and ViewModel and here is the source code...

WPF

MVVM

Connection to the database in WPF with MVVM design pattern

10 Feb 2018 by abboudi_ammar

I am a beginner at MVVM design patter and WPF I am trying to make a small example of connection to the MS Access database using the WPF and MVVM Light Toolkit patter design. but when i run the program it does not do anything and when i debug i find that the instruction stops at the instruction...

Link two windows in WPF + MVVM light

27 Feb 2018 by abboudi_ammar

Good evening, I try to link the window WPF "MainWindow" with another window WPF that I name it "window". I wrote a code with MVVMLight Toolkit and my question:does this confirm the MVVM design pattern, or how can I fix it? What I have tried: public class MainViewModel : ViewModelBase { ...

WPF

MVVM

A LINQ Tutorial: WPF Data Binding with LINQ to SQL

11 Dec 2009 by Abby Fichtner (Hacker Chick)

A tutorial and application on using WPF Data Binding with LINQ to SQL classes. This is part 3 of a three-part tutorial on using LINQ to SQL.

MVVM pattern and Silverlight

22 Aug 2010 by Abhinav S

You might also want to consider using Microsoft Prism[^].Any view consisting of another view could actually be broken up into sub regions within regions thus breaking your complex view into smaller ones. You will need to have a look at the Prism documentation and understand it before you...

Silverlight

MVVM

WPF Viewmodel communication

5 Dec 2010 by Abhinav S

One way to do this could be by using event aggregators[^].When to use an event aggregator and when not is always a debatable topic though.

WPF

MVVM

How to bind PasswordBox with wpf in MVVM

14 Jan 2011 by Abhinav S

You could start with this[^] article.

C#4.0

WPF

MVVM

WPF(MVVM) Dispatcher question

18 Apr 2011 by Abhinav S

You can avoid float calculations if possible - as far as i know, progress bar understand int so why use float - float calculations are slower. Other than that, this looks good code IMO.

multi-threading

MVVM

Prism Master Detail Examples

17 Jul 2011 by Abhinav S

There are two ways to do this.The simpler way is to obviously pass an instance of the detail object to your details view model and then let the view model take care of the binding to the actual view.if you want to decouple the master and detail however, you can use an...

C#4.0

MVVM

pass values between viewmodels in mvvm silverlight

9 Aug 2011 by Abhinav S

You can use an Action delegate to go back to the first view when edit is clicked in the second view.

Silverlight

MVVM

Binding to a PasswordBox

5 Feb 2012 by Abhinav S

Since there is no binding available for password boxes, attached properties are the only choice.

Some Basical Questions About MVVM Pattern

15 Jun 2012 by Abhinav S

Why the Validation Applied in the Model Class instead Of ViewModel Classes?This is the classes that handles data. This is also the class that has INotifyProperty implemented. So it makes sense to have validations here.However, there is nothing stopping you from implementing validations...

WPF

MVVM

In your experience, which is better Framework Prism or MVVM Light to develop WPF Application?

16 Jan 2013 by Abhinav S

Both of them work best together, so you should try and build and application that uses Prism and MVVM together.

WPF

MVVM

In your experience, which is better Framework MVVM to develop WPF Application which includes different types of modules like POS(point of sales), FO(Front Office)?

20 Jan 2013 by Abhinav S

MVVM is not related to modules.This helps you develop screen in a view - view model - format so that you can keep UI decoupled from the code / business logic.The idea behind this is that you can actually style your view without really worrying about whats happening in your code and vice...

WPF

MVVM

What is the actual use of Modal classes in WPF MVVM project using SQL as the database.

22 Apr 2013 by Abhinav S

Model classes act as the placeholder for your data.The viewmodel populates these models.Whenever, there are changes to the model, the viewmodel notifies the UI that it needs to be refreshed due to change in data.

WPF

MVVM

Removing an item in the list in MVVM

11 Mar 2014 by Abhinav S

TryBinding to the selected items of a ListBox (or another items controls)[^]ListView MultiSelect, MVVM and RoutedCommands[^]MVVM Multiselect Listbox[^]

XAML

PRISM

MVVM

how to create mvvm wpf validation on button click

30 Mar 2014 by Abhinav S

TryValidation in Windows Presentation Foundation[^]WPF Validation[^]Data validation in WPF[^]

WPF

MVVM

Server Side Paging in MVVM with Silverlight Help

29 Jun 2014 by Abhinav S

TryVirtual Paging with Silverlight/WCF Services[^]Introducing An MVVM-Friendly DomainDataSource: The DomainCollectionView[^]

Silverlight

PRISM

MVVM

Can I do this in code behind in a MVVM application?

17 Feb 2015 by Abhinav S

No DataContext should not be set in the code-behind.Set the datagrid's source to a collection.

Ribbon

MVVM

How to do binding of cascading combo boxes?

11 Nov 2015 by Abhinav S

Try these links -Cascading Dropdown & Multiselect Option in ListBox Using WPF[^]http://social.technet.microsoft.com/wiki/contents/articles/17946.cascading-comboboxes-in-wpf-using-mvvm.aspx[^]

How to bind a treeview to viewmodel

25 Jan 2013 by Abhishek Pant

How to: Make a Hierarchical treeview binding in WPF[^]Working with Checkboxes in the WPF TreeView[^]WPF Menu using ViewModel - Part 1[^]Simplifying the WPF TreeView by Using the ViewModel Pattern[^]

WPF

MVVM

treeview

C# 5.0 vNext - New Asynchronous Pattern

20 Nov 2010 by Abhishek Sur

C# 5.0 CTP was introduced recently, this article is specally dealing with my own understanding with this realease with few sample applications

WPF Tutorial - Concept Binding

30 Dec 2010 by Abhishek Sur

Binding is the most important topic of WPF programming. In this article, I have demonstrated how you could employ DataBinding to ensure that the Presentation logic is separated from the View and also give a simple demonstration on how the DataBinding concept works.

TextBox.Text not getting updated on second time

16 Jan 2011 by Abhishek Sur

To get a textbox updated when a property changes its value, implement your property from INotifyPropertyChanged. http://www.abhisheksur.com/2010/05/object-notifiers-using.html[^]You should also note, binding will not work if you explicitly set TextBox.Text somewhere in code behind....

C#4.0

WPF

MVVM

RegisterName for StoryBoards in WPF (NameScopes)

16 Mar 2011 by Abhishek Sur

RegisterName for StoryBoards in WPF (NameScopes)

InputBinding for WPF and Silverlight with MVVM

20 Mar 2011 by Abhishek Sur

WPF inputbindings to bind your key and mouse events directly with your ViewModels

WPF

MVVM

Validation in .NET Framework 4

18 Jun 2011 by AbhishekGoenka

Validation Frameworks in .NET Framework 4

What is the best approach to communicate between Two view-models (Using MVVM & Prism 4.0)

8 Mar 2013 by Adil Malik

The best approach is to create an intermediate layer of Services

WPF

PRISM

MVVM

Sharing Code Between Windows Phone and Windows Store Apps using MVVM and PCL

31 Mar 2014 by Adil Mughal

This article explains how developers can leverage Model-View-ViewModel (MVVM) pattern and .NET Portable Class Libraries (PCL) to create a shared/reusable code for developing apps on Windows Phone and Windows Store platforms.

In MVVM should the ViewModel or Model implement INotifyPropertyChanged?

15 Oct 2014 by adityaswami89

I would suggest you to implement in both : Model and ViewModelAn example is as below:MVVM Sample

Passing parameters between classes

28 Jul 2011 by adnama

i have this codepublic partial class ScenarioEditorView : UserControl, IScreenSelectorSubItem, IActionable, INotifyPropertyChanged { ScenarioEditorViewModel viewModel = new ScenarioEditorViewModel(p1);the initialization is out of the method because it is used in...

MVVM

Parameter

How do I handle out of memory exception in windows application

17 Dec 2021 by adriancs

At the app.config, add the following: Read more about "gcAllowVeryLargeObjects - Microsoft .NET Documentation" and em... yupe, as Dave...

MVVM

load-testing

performance

Wpf MVVM, how to disable command based on error on conversion failing with iNotifydataerrorinfo through the viewmodel?

15 Nov 2019 by Ahmad_kelany

Hello everyone, I have a ValidatableBindableBase class that implements INotifyDataErrorInfo interface, and INotifyPropertyChanged interface. The validations depending on data annotations and the custom validations are working fine. The problem is when the text box fails to convert the input...

WPF

MVVM

validation

What is the best way to validate users login in Windows Application?

31 May 2014 by Ahmed Bensaid

An example in WPF ;)http://wpfmembershipadmin.codeplex.com/[^]

WPF

MVVM

Where can I found an example that explain using prism 6 library with entity framework

3 Sep 2017 by Ahmed Dabas

Where can i found an example that explain using Prism 6 library with entity framework in wpf applications by implementing MVVM Framework What I have tried: i google it , and no result founded

C#7.0

entity-framework

MVVM

Change LongListSelector data with MVVM, windows phone 8.0

14 Apr 2014 by ahmetkocadogan

Hi. I started to develop an app for windows phone 8. And my app is like this:It has a search page, a textbox at te top. and a longlistselector. when a user enter some text and clicks the app bar button (search button),i'll pass that input to te webservice, and retrieve some data, after that...

Windows-Phone-8

XAML

MVVM

Exploring Opportunites for The Cloud: Part 1

31 Dec 2010 by Al Alberto

A series of articles exploring how to develop applications for Windows Azure using Bing Maps.

ListBox Styling (Part 3 - Additional Templates) in Expression Blend and Silverlight

6 May 2010 by Alan Beasley

Explanation and examples of Additional Templates and Generated Content of a ListBox. Covering Layout, Transitions, and Animation.

ViewModel to ViewModel Navigation in Windows Phone 8 using MVVM Cross

24 Jul 2013 by alen_alex_i

I am doing an application in windows phone 8 using MVVMCross.I am not able to navigate from one page to another.Tried using ShowViewModel, but did not work.Could some one help me out in this.Thanks in Advance.

MVVM

Problem with ado.net

20 Apr 2013 by Alex Define

I have a classic Ado.net entity like Clients and Orders. Also I have a WPF window and using Mvvm architecture. I am new to mvvm and Ado.net so I cant figure out how can get my datagrid(that using one itemsource) show items from clients table and orders table. Its might sound obvious but problem...

On clicking CancelBtn cancel changes

19 Jul 2013 by Alexander Dymshyts

I have in my program custom property grid, where all properties are bindable from viewModel. In this property grid there are also 2 buttons - SaveBtn and EditBtn. User edit properties in property grid. When SaveBtn is clicked, all properties must be saved in a database. If user wants to edit...

WPF

MVVM

Use multiple ViewModels in the same View

7 Oct 2013 by Alexander Dymshyts

Set each datacontext of your datagrids to different viewModel.

WPF

MVVM

Set title to the window.

9 Apr 2014 by Alexander Dymshyts

It's funny, but I cann't find where I am wrong...So I have 2 windows. From the first window I'm calling second on button click event:var window = new WindowButtonClick("Graphic") {DataContext = new GraphicViewModel()};window.ShowDialog();Second window is a window, where I load different...

WPF

XAML

MVVM

Ext JS MVVM Tricks: Part 1. Self Binding

30 Mar 2017 by Alexey Solonets

In this tip, you will learn how to create a component with configuration properties and bind to them using MVVM.

ExtJS

MVVM

Ext JS MVVM Tricks: Part 2. ViewModel Isolation

30 Mar 2017 by Alexey Solonets

Completing Part 1 and making ViewModels isolated

ExtJS

MVVM

Model View Controller, Model View Presenter, and Model View ViewModel Design Patterns

3 Oct 2009 by alexy.shelest

This article will compare and contrast the MVC, MVP, and MVVM, and suggest which pattern to use based on your technology of choice and the problem that you are trying to solve.

WPF / MVVM Real-Time Trading Application

10 Feb 2012 by alexy.shelest

This project is a real-time multi-threaded trading application framework developed with WPF / MVVM

Post Strongly Typed Partial View's Data To It's Parrent's Controller

2 Mar 2011 by Alireza Loghmani

Hi guys, I'm gonna create profile page for my site. This page includes some 'Partial View' and each part posts some data.My question is: How can I get posted data (strongly typed) from each partial view separately?Something like this:[HttpPost] public ActionResult Home(Model1...

MVC

MVVM

How to create data trigger for data grid dynamic columns?

4 Mar 2013 by aliwpf

Hi. try this way : ...

WPF

MVVM

How to create data trigger for data grid dynamic columns?

4 Mar 2013 by aliwpf

Hi.this doesn't work completely. if you complete it, please tell me: ...

WPF

MVVM

“Propertychange” is not firing up when text is changed or inserted in textbox present inside my view

18 Jan 2017 by Alpha21oct1989

I have two TextBoxes inside my View on which I am trying to implement a simple validation using MVVM design pattern.The issue is even when my ViewModel is implementing Inotification Changed interface and the property is bound tot the text property of the TextBox,on entering text propertyChange...

WPF Commanding: The Basics

13 May 2009 by Alphakoda

A first look at commanding in WPF